TY - JOUR
T1 - Nanosized manganese oxide/holmium oxide
T2 - A new composite for water oxidation
AU - Najafpour, Mohammad Mahdi
AU - Salimi, Saeideh
AU - Zand, Zahra
AU - Hołyńska, Małgorzata
AU - Tomo, Tatsuya
AU - Singh, Jitendra Pal
AU - Chae, Keun Hwa
AU - Allakhverdiev, Suleyman I.
N1 - Funding Information:
The authors are grateful to the Institute for Advanced Studies in Basic Sciences. The reported study was funded by grant RFBR-Iran according to the joint research project no. 17-54-560012 and no. 96003636 supported by Iran National Science Foundation (INSF). TT was supported in part by Grant-in-Aids for Scientific Research (S) (No. 17726220801 and No. 17K07453). We thank the ImageJ group (W. S. Rasband, ImageJ, U. S. National Institutes of Health, Bethesda, Maryland, USA, http://imagej.nih.gov/ij/, 1997– 2016) for the software to provide colored SEM or TEM images.
Publisher Copyright:
© 2017 The Royal Society of Chemistry and the Centre National de la Recherche Scientifique.
PY - 2017
Y1 - 2017
N2 - Herein, holmium oxide as a support for nanosized Mn oxide was used toward the synthesis of a new catalyst for water oxidation. A composite of Mn and Ho oxide was synthesized by a simple hydrothermal procedure and characterized by scanning electron microscopy, extended edge X-ray absorption fine structure, transmission electron microscopy, powder X-ray diffraction and electrochemical methods. The effect of calcination temperature on the composite performance for the water-oxidation process was examined in the range of 100-600 °C. The turnover frequencies for the catalyst toward water oxidation in the presence of cerium(iv) ammonium nitrate and photo-produced tris(2,2′-bipyridyl)ruthenium(iii), [Ru(bpy)3]3+ are 0.12 and 0.04 (mmol O2 per mol Mn s), respectively. In addition, the catalyst shows self-healing in the presence of cerium(iv) ammonium nitrate and under the water-oxidation conditions.
AB - Herein, holmium oxide as a support for nanosized Mn oxide was used toward the synthesis of a new catalyst for water oxidation. A composite of Mn and Ho oxide was synthesized by a simple hydrothermal procedure and characterized by scanning electron microscopy, extended edge X-ray absorption fine structure, transmission electron microscopy, powder X-ray diffraction and electrochemical methods. The effect of calcination temperature on the composite performance for the water-oxidation process was examined in the range of 100-600 °C. The turnover frequencies for the catalyst toward water oxidation in the presence of cerium(iv) ammonium nitrate and photo-produced tris(2,2′-bipyridyl)ruthenium(iii), [Ru(bpy)3]3+ are 0.12 and 0.04 (mmol O2 per mol Mn s), respectively. In addition, the catalyst shows self-healing in the presence of cerium(iv) ammonium nitrate and under the water-oxidation conditions.
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U2 - 10.1039/c7nj02747h
DO - 10.1039/c7nj02747h
M3 - Article
AN - SCOPUS:85034624595
SN - 1144-0546
VL - 41
SP - 13732
EP - 13741
JO - New Journal of Chemistry
JF - New Journal of Chemistry
IS - 22
ER -